How old is the earliest trace of life on Earth?

How old is the earliest trace of life on Earth?

The question of when life began on Earth is as old as human culture. “It's one of these fundamental human questions: When did life appear on Earth?” said Professor Martin Whitehouse of the Swedish Museum of Natural History. So when some apparently biological carbon was dated to at least 3.95 billion years ago—making it the oldest remains of life on Earth—the claim sparked interest and skepticism in equal measure, as Ars Technica reported in 2017…